Aftermarket Impeller Repair Kit for Volvo Penta 3.0–8.1L Gas Engines — Replaces 21213664, 3584350 and 3588914
Aftermarket Impeller Repair Kit for Volvo Penta 3.0–8.1L Gas Engines — Replaces 21213664, 3584350 and 3588914 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
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Aftermarket Impeller Repair Kit for Volvo Penta 3.0–8.1L Gas Engine...
Aftermarket Impeller Repair Kit for Volvo Penta 3.0–8.1L Gas Engines — Replaces 21213664, 3584350 and 3588914 is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket impeller repair kit is intended for servicing the raw-water cooling pump on selected Volvo Penta V6 and V8 gasoline engines, including applications in the 3.0L, 4.3L, 5.0L, 5.7L and 8.1L displacement ranges. Replacing a worn or damaged impeller can help restore proper water circulation and cooling-system performance.
The impeller is listed as a replacement for Volvo Penta part numbers 21213664, 3584350 and 3588914. Additional aftermarket and manufacturer references are provided below as cross-reference leads. Always compare the engine model, pump configuration, existing part number and impeller dimensions before ordering.
- Spline-drive installation for compatible raw-water pump applications.
- Neoprene rubber impeller with a brass hub.
- Service kit includes the impeller, O-ring and gasket.
Part Number Matrix
Use the following references to help identify a comparable replacement. A number match alone does not confirm fitment for every engine or pump configuration.
| Brand | Part Number |
|---|---|
| Volvo Penta | 21213664 |
| Volvo Penta | 3584350 |
| Volvo Penta | 3588914 |
| Volvo Penta | 3841696 |
| Volvo Penta | 3842786 |
| Volvo Penta | 21951354 |
| Johnson | 09-812B |
| Johnson | 09-812B-1 |
| Jabsco | 13554-0001 |
| Yamaha | 6TA-12457-00 |
| Sierra | 18-3306 |
| Indmar | S685007 |
| Yanmar | 119773-42600 |
Engine & Model Compatibility
The applications below reflect the stated cross-reference range for compatible raw-water pump configurations. Model years, serial numbers, pump housings and shaft arrangements can vary, so confirm the complete application before installation.
| Brand | Model | Rated HP | Stroke | Reference Part No. | Application Notes |
|---|---|---|---|---|---|
| Volvo Penta | 3.0GL, 3.0GS | 130–140 | 4-Stroke | 21213664, 3584350 | Raw-water pump applications |
| Volvo Penta | 4.3GL, 4.3GS, 4.3GXi | 180–225 | 4-Stroke | 21213664, 3588914 | Raw-water pump applications |
| Volvo Penta | 5.0GL, 5.0GXi | 220–270 | 4-Stroke | 21213664, 3588914 | Raw-water pump applications |
| Volvo Penta | 5.7GL, 5.7GS, 5.7GXi | 250–320 | 4-Stroke | 21213664, 3588914 | Raw-water pump applications |
| Volvo Penta | 8.1Gi, 8.1GXi | 375–420 | 4-Stroke | 21213664, 3588914 | Raw-water pump applications |
| Indmar | Monsoon | 320–350 | 4-Stroke | S685007 | Listed for selected 320–350 HP configurations |
Technical Specifications
- Product Type
- Raw-water pump impeller service kit
- Installation
- Spline drive
- Hub Material
- Brass
- Impeller Material
- Neoprene rubber
- Outside Diameter
- 57 mm (2-1/4 in)
- Width
- 48.3 mm (1-15/16 in)
- Number of Blades
- 12
- Center Bore
- 14.5 mm
- Color
- Black
- Package Contents
- 1 impeller, 1 O-ring and 1 gasket
What’s in the Box
- 1 × Impeller — neoprene rubber with brass hub; listed as a replacement for Volvo Penta 21213664
- 1 × O-ring
- 1 × Gasket
Installation Notes
- Close the seacock or water-intake valve and allow the engine to cool before servicing.
- Access the raw-water pump and remove the cover-plate screws.
- Remove the old impeller with suitable pliers or an impeller puller, taking note of the vane direction.
- Clean debris from the pump housing and inspect the housing, cover plate and key or drive interface for wear or damage.
- Lightly lubricate the replacement impeller and the inside of the pump housing with a suitable water-based marine lubricant.
- Install the impeller with the vanes oriented in the same direction as the original, unless the pump manufacturer specifies otherwise.
- Fit the new gasket and O-ring in their correct locations.
- Reinstall the cover plate and tighten the screws evenly in a crisscross pattern.
- Open the seacock, start the engine and check immediately for leaks, overheating and proper water discharge.
Troubleshooting & FAQ
How do I confirm that this impeller fits my engine?
Compare your engine brand, model, horsepower, stroke, pump configuration and existing part number with the information on this page. Also compare the impeller dimensions and drive interface with the removed part. If the model year or serial-number range is not shown, consult the engine or pump manufacturer before ordering.
What are common signs of a failing impeller?
Symptoms can include engine overheating at idle or low speed, reduced water discharge, damaged or missing vanes, cracking, hardening or visible wear. Inspect the pump and replace the impeller if it has run dry or shows damage.
How often should an impeller be inspected or replaced?
Inspect the impeller at least annually and replace it according to the engine or pump manufacturer’s maintenance schedule. Frequent operation in sandy, silty or debris-laden water may require more frequent service.
What lubricant should be used during installation?
Use a water-based marine lubricant or a small amount of dish soap to help the impeller enter the housing. Avoid petroleum-based grease unless it is specifically approved for neoprene impellers.
Are there exceptions to the listed fitment?
Yes. Similar engine models may use different pump housings, drive arrangements or impeller dimensions. The listed references and dimensions should be treated as application-identification information, not as a substitute for checking the complete engine and pump configuration.
Is this an OEM part?
No. This is an aftermarket replacement service kit. The manufacturer names and part numbers shown on this page are used only to identify intended applications and cross-reference references.
What are the shipping and return terms?
Shipping availability, delivery time, warranty coverage and returns are determined by the applicable store policies shown at checkout. Contact customer support before installation if the supplied parts do not match the ordered application.
Safety & Important Information
- Verify the engine model, model year or serial range where applicable, pump configuration, dimensions and reference number before purchase.
- Close the water intake and allow the engine to cool before beginning service.
- Do not operate the engine without an adequate water supply; a dry-running impeller can be damaged quickly.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended when the pump, cooling system or engine configuration is uncertain.
About Sea Sierra
- Marine Replacement Parts — Service components for selected recreational and marine engine applications.
- Application-Focused Listings — Reference numbers, dimensions and installation information are provided to support part identification.
- Customer Support — Contact support with your engine and pump details if you need help confirming an application before installation.
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